Smoke consumer



F. H. DILLON SMOKE CONSUMER Sept. 23', 1924.

Filed Aug. 30 1920 2 Sheets-Sheet 1 Ha l [N VENTUE Sept. 23. 1924. 1,509,342

F. H. DILLON SMOKE CONSUMER Filed Aug. 30 1920 2 ShootrSlicet 2 16 A /3 l7 /Z 6 f [NY/ENTER State of Illinois, have invented certain new Patented Sept. 23, 1924.

UNITED STATES FRANK I-I. DILLON, OF ROCK ISLAND, ILLINOIS.

SMOKE CONSUMER.

Application filed' August 30, 1920. Serial No. 406,825.

To all whom it may concern:

Be-it known that I, FRANK H. DILLON, a citizen of the United States, residing at Rock Island, in the county of Rock Island and and useful Improvements in Smoke Consumers, of which the following is a specification.

My invention relates to improvement in devices for consuming smoke and improving the combustion in steam boilers and furnaces and for economizing on fuel used therein, in which jets of air are introduced into the fire box above the level of the grate bars and is particularly applicable to boilers of the fire box or locomotive type, but may be used to introduce air into the fire chambers of the ordinary type of tubular boilers where they are so installed that it would be dilficult to use the air tubes described in Patent No. 1,191,931, issued July 18, 1916, to F. H. Dillon and M. L. Henderson.

The objects ofmy invention are, first, to provide a smoke consumer which can be applied to Water leg, fire box, or locomotive type boilers; second, to provide improved means for directing the air current in the proper directions in the fire box; third, to provide a nozzle to direct the air as desired which will not burn off and so constructed that the air passing out of the nozzle will protect it from the heat on the interior of the fire box.

I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a side elevation of a fire box or locomotive type boiler showing the grate bars, flues, flue sheet, and crown sheet in dotted lines with the manifold mounted above the line of the draft tubes and connected with the draft tubes by air tubes,

Figure 2 is a vertical sectional detailof my device on the line m0 of Figure 1.

Figure 3 is an end view of the inner end of one of the nozzles;

Figure 4 is a side elevation of the fire box or locomotive type of boiler with the manifold secured at the level of the draft' detail on fold.

Similar numerals refer to similar parts throughout the several views.

Draft tubes, 13, are provided passing through and secured to the water legs 14: and 15 of the boiler 1 in the usual way and may be placed in the brick walls of tubular boilers when desired. The number, location and size of the draft tubes may be varied to suit the size and shape of any particular boiler or fire box as desired.

Manifolds, 2, are suitably secured to or near each side of the boiler. The manifolds may be at the level of the draft tubes and closely connected to them as in Figures 4;

and 5 or may be located above the draft tubes and connected to them by air tubes, 3, as in Figures 1 and 2, the size and arrangement of the parts depending upon the conditions present in each particular case.

When the manifold is located at the level of the draft tubes it may be composed of an inner plate, 16, attached to the boiler shell by stud bolts, 17, and an outer plate, 18, fitted to and held over the inner plate by the straps, 19, which are secured to the boiler shell by stud bolts, 19, as shown in Figure 5. In Figure 5, the number 16 shows the lower side of the nozzle 12.

A. steam line, 4-, enters one end of the manifold and has nozzles, 6, secured thereto adapted to allow steam or compressed air 7 as shown root the air inward and downward at varying angles. The upper section of the inner end of the nozzle has its upper wall curved so as to deflect the air more sharply downward than either of the other sections. The lower, or lowest, section is so formed as to direct the air almost horizontally into the furnace. The angle of the middle section,

when three divisions are used, is preferably formed at an angle somewhat less than the angle of the upper section, but somewhat greater than the angle of the lower section. An intermediate division of the nozzle may be extended into the furnace in place of the upper one, and protected from burning off by the air currents under or around it, but I have shown my preferred form as it is more eflective in mixing the air currents. The entire nozzle can be turned to direct the air streams somewhat to the rear as well as downward and inward, if desired.

It is Well recognized that the perfect combustion of fuel requires the introduction of considerable quant ties of air in such a way that the air shall become mixed with the gases in the furnace and in such a direction that the incoming current of air will tend to hold the gases over the burning coal in the furnace long enough to give time for substantially complete combustion.

Great difficulty has been experienced in the pastin providing nozzles which would throw the current of air far enough into the fire box and in the proper direction to accomplish these results, without burning off and to provide a nozzle able to withstand the heat of the furnace.

I In. my nozzle, it is onlynecessary for the nozzleto project a comparatively short distance into the furnace and the currents of air passing through the lower sections of the nozzle protect the projecting section of the nozzle from. the heat so as to prevent its burning ofi.

Considerable objection has also been made to the use of steam jets on, locomotives on accountof the noise and my manifold tends to mufile the noise to alarge extent while the baflles, 8. and 9 increase the muffling efiect. r

A screen, 7 is preferably provided at the front end of the manifold to guard against the introduction of anything which might obstruct the passage of the air. Battles, 8 and 9, may be secured within the manifold. The manifolds may be seated upon the tops, 3 of theair tubes, 3, when constructed as shown in Figure 2 and secured by flanged plates, 11, having openings, 11*, for the admission of air and the bottom plates, 10, of.

the. manifolds bev provided with openings. 10, for the passage of air and steam. The interior of the tubes 3, is shown by 3 The lower ends, 3?, of the air tubes may be formed integral with the nozzle, 12, and the divisional walls,.12 and 12 The area of the air passages inthe manifoldshould be at least one and one-half times the area of the draft tubes, but may be increased or diminished. as desired in each particular case. The nozzles, 6, should be small enough. to guard against an excess of steam and air and the size of the air tubes may be limited as desired for the same purpose: as it is obvious that an excess of air forced. into-thefire box might have the effect of cooling the fireto too great an extent, instead. ofproducing the maximum heat which a proper mixture of air and gas will produce.

lVhile my device is primarily designed for use with bituminous coal, it can be used benelicially with various other fuels and the steam pressure and air supply may be graduated to meet the needs of each particular case.

In the drawings, for clearness, I have shown the spacing of the openings at the inner end of the nozzle, 12, somewhat exaggerated. In practice, I prefer to have the successive openings much nearer together, so that the mixture of the different streams of air will take place almostentirely within the furnace instead of partly in the draft tubes.

I claim:

1. In a smoke consuming device, the combination with draft tubes, of nozzles secured therein above the level of the grate bars, each nozzle having a plurality of openings at its inner end, the upper opening projecting into the fire box and the other openings below and. in the rear of the upper one.

2. In a furnace, draft tubes secured in the side walls thereof, nozzles mounted inside of the draft tubes, an air manifold secured to the side walls of the furnace on the outside thereof, pipes leading from openings in the air manifold to the outer ends of the nozzles, and transverse bafiles secured in the manifold between the steam jets and the open front ends of the manifolds.

3. In a smoke consuming device for fire box and. steam boilers, the combination with draft tubes passing through the water legs of the fire box above the level of the rate bars, of nozzles suitably secured in raft tubes, each nozzle having its inner end partitioned off in a plurality of divisions, the upper division. projecting into the fire box and having its walls so formed as to project the air inward and downward, the other divisions formed at acute angles to the upper division.

l. In a smoke consuming device for fire box and steam boilers, the combination with draft tubes passing through the water legs of the fire box, of nozzles suitably secured in draft tubes, each nozzle having its inner end partitioned off in a plurality of divisions, one division projecting into the fire box and having its walls so formed as to project the air inward and downward, the other division or divisions formed so asto project the air passing therethrough under or aroundthe projecting division of the nozzle to pro tect it from the heat and mingle the air )assing through: the different divisions of the nozzle.

5. In a smoke consuming device for furnaces, the combination with draft tubes secured on the sides thereof, of nozzles secured in the draft tubes, each nozzle having a plurality of progressively arranged openings at QII its inner end, the upper opening projecting into the furnace and the other openings located successively below and in the rear of the upper opening.

6. In a smoke consuming device for furnaces, the combination with draft tubes secured 011 the sides thereof above the level of the grate bars, of nozzles secured in the draft tubes, each nozzle having a plurality of openings one of which projects into the furnace and directs the air current passing through it inward and downward in the furnace and is somewhat screened from the direct heat of the furnace fire by the air cur rents from the adj aoent openings.

In testimony whereof I afiix my signature.

FRANK H. DILLON. 

